National Instruments PXIe-5622, Процедура калибровки

Страница: 14 / 52

NI 5622 Calibration Procedure 14 ni.com
Verification
This section describes the program you must write to verify the
performance of the NI 5622 to the published specifications for the device.
Note If any of these tests fail immediately after you perform an external adjustment, make
sure that you have met the requirements listed in the Test Equipment and Test Conditions
sections before you return the digitizer to National Instruments for repair.
Absolute Amplitude Accuracy
Complete the following steps to verify the absolute amplitude accuracy of
the NI 5622.
1. Make the following connections:
a. Connect the signal generator to the source input port of the power
splitter using the SMA cable.
b. Connect the power meter to output port 1 of the of the power
splitter.
c. Connect channel 0 (IF IN) of the digitizer to output port 2 of the
power splitter.
Figure 3. NI 5622 Absolute Amplitude Accuracy Connections
1 R&S NRP-Z91 Power Meter
2 Weinschel WA 1507R Splitter
3 To Signal Generator
NI PXIe-5622
16-Bit IF Digitizer
ACCE SS ACTIVE
PFI 1
IF IN
CLK IN
CLK OUT
TTL (+5 V MAX)
2
S
1
3
2 1